We will not be able to simultaneously add Departure and Final due to the frequencies they use. The setup consists of four SDRs and al four are serving multiple frequencies (each dongle can only cover 2.5 MHz of bandwidth). That is how we have so many Swiss Radar frequencies. The only option to cover all frequencies would be to switch from single-channel feeds to four feeds that each scanned multiple frequencies.
So this means that you need more equipment for those frequencies?
Especially in LSZH the lower frequencies are in my eye the most interesting ones, as we have several issues which most airports don't have. (Noise abetment procedures, high traffic on converging/crossing runways, etc.). So, it would be really cool to have departure and final back online.